Mold for making brass castings.



No. 783,577. PATENTED FEB. 28, 1905.

. Q No. 788,577. PATENTED FEB. 28, 1905.

P. HAGGBNJOS.

MOLD FOR MAKING BRASS OASTINGS.

APPLICATION FILED JUNE so, 1904.

Q JM 1 As,

ATTORNEY n'rrnn tim Patented February 533%, 1905..

llllmtw FUN llllll il tll llfit EWM$$ liltfitliifltlhltiititnSPECIFICATION forming part of Letters Patent No. 783,577, dated.February 28, 1905.

Application filed June 30, 1904. Serial No, 214,7,

To (all who/lb it new concern/.-

Be it known that I, FRANK llAGG names, a citizen of the United States,residing at tit. Louis, in the State of Missouri, have invented certainnew and useful Improvements in Metal Molds for lv'laking Brass Hastings;and i do declare the following to be a full, clear, and exactdescription of the invention. such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters of reference markedthere on, which form a part of this specification.

My invention relates to improvements in metal molds for making brasscastings, particularly such castings as are used in the various stylesand kinds of journal-bearings used in all kinds o'l, light and heavycars for heavy and rapid transportation.

The objects of my im 'n'ovements are to broaden the state of the art bythe use of important and valuable experiments that l have made in myeffort to produce a better result in the making of brass castings iniron molds by the construction of a mold form that can be made cheaper,operated easier, be more durable, and produce good castings more 'apidlythan the old way, and l des'gn these features herein embodied to beimprovements on my previous application now pending, which was liled May5,19O LSerial No. 206,515, in this same branch 01" the art. l attainthese objects by the mechanism illustrated in the accompanying drawings,in which Figure l is a perspective View of the mold complete closed.Fig. 2 is a perspective view of the metal parts of the mold complete andopened. Fig. 3 is a face view of one of the sides of the middle sectionoi the mold proper. Fig. 4 is a perspective view of one of the removablehandles, which is used also as a wrench to operate the mold. Fig. 5 is aface View of 'the other side of the middle section of the mold proper.Fig. 6 is a longitudinal vertical center-cut section of the moldcomplete with its hard-sand fillings, taken on the plane 01, the brokenline :0, Fig. 5. Fig. 7 is a vertical center-cut cross-section of themold complete with its hard-sand fillings, taken on the plane of thebroken line 1 ;1

Fig. liig. 8 is a face view of the upper hard-sand lilling tor the backof the bearing. Fig. 9 is a face view of the lower hard-sand lilling forthe concave side of the bearing. Fig. 10 is a perspective view of alilaster Car-l5uilders bearing such as turned out of the mold as it isshown in these various drawings, this one being selected as a goodrepresentation of the general class of bearings to which ll apply thismold.

In all 01 the views like letters refer to like parts.

This construction of a mold l call a conr bination reversible skeletonmold, in which the combination is metal and hand-sand lillings. Thereversible feature is that it can be used either side up, so that themold may be lilled by the molten metal through its back, or it may bereversed. and lilled by the molten metal through its bearing side. Thisis a necessity, as some railroads specify bearings poured "from the backand some specify bearings poured from the journal or bearing side. Theskeleton leatureol the mold is that properly there is only one sectionof iron mold proper, and that is the center section, and the hard-sandlillings lie in their seatings or prints on each side oi? it and areheld in position and protected by iron ages secured to the centersection or mold proper by hinges and locking devices.

Before entering into a detailed description of the parts of my mold andtheir functions ll will describe the mold complete as shown in Fig. 1.in this perspective view is shown the center section A, which is themold proper, to which is hinged the two cages B and. U and to which arealso pivoted the locking-Inittons l .l, which hold the cages against thehard-sand [illings in their seats or prints in the center section ft.The hard-sand lilling D, with its gate-opening (1, is shown in the cageB in this view. This center section A, is shown in this view with apivot or trurmion a on each end of it which are provided with squaresockets a a. These trunnions are arranged to lit into a saddle or hangerwhich consists of the two standards F F and the base-plate (3i, boltedtogether. ilhen the mold is in this hanger, it can be easily turned overto open and close the cages and insert the hard-sand fillings and removethe old fillings and the castings, and also all of the turning over,looking, and handling of the hot mold is done by the cool handles H,Fig. 4, inserted in the square sockets a" and i, which is a great helpin the rapid manipulation of the mold, these handles H being alwaystaken out of the hot mold when not in use and used in a series of moldsbeing operated together, and, further, as a general specification I haveshown a perspective view of a casting K, Fig. 10, which represents thecasting produced by this mold, as shown, except that the back of thecasting is always provided with certain letters and figures-such as theinitial of the railroad, the class of the bearing, the size of thebearing, the number of the pattern, and the maker of the castings. Alsothese bearings or boxes are in a number of different forms and sizes,but all have the general form of a back and a bearing surface and allare adapted to a position between the journal of the axle and thehousing on the trucks of the car.

In a detailed description of the mold, A is the center section of theiron mold, which forms the whole exterior band of the castingcavity andthe beveled sides of its back, leaving only the flat portion of its backand the bearing side of the casting-cavity to be covered by the twohard-sand fillings D and E, Figs. 8 and 9. This center section isprovided with trunnions a (0, having square sockets a a, also two setsof hinge-lugs (0 a which match the hinge-lugs on the cages B and C. Itis also provided with slight lug extensions on its edges, where thelocking-buttons I I are pivoted by screws in the bottom of their squaresockets z" 2". he two face sides of this center section A are shown inFigs. 3 and 5. In Fig. 3 is shown the bearing side of the mold with thewhole exterior band of the casting-cavity with the seatings or prints(0* (f for the hard-sand filling D and its filletflange extension (Z Theother side of this center section A (shown in Fig. is the back of themold, and it is provided with a raised beveled seating c for thehard-sand filling, so that in inserting the filling it always finds itsproper seating the same every time and is easily retained by the cage C.In this form of a raised bevel-seating (r I obtain a greater thicknessof metal around this edge of the mold-cavity, which prevents the moldcracking and crumbling on its thin edge, as is shown in my formerapplication mentioned.

The cages B and U are provided with hingelugs 7/ Z) and 0 c to match thehinge-lugs on the center section A, and on the other side of each cagelocking-lugs b 7/ extend out to turn the locking-buttons II over. Boththe lugs b 7) and the buttons I I have inclined surfaces, so that theymake up solid on a little variation in the thickness of the fillings.Also the faces of the cages are perforated for the escape of the gasfrom the mold through the hard sand fillings and to obtain anunobstructed space around the gate opening through the fillings to thecavity of the mold. The cages are hinged to the center section by thehinge-lugs and the rods J J. ,The arrangement of the joints of the moldand the porousness of the fillings makes a perfect venting system forall parts of the mold-cavity.

The longitudinal center-cut section, Fig. 6, and the vertical center-cutcross-section, Fig. 7, showing the fillings all in their seatings, andthe arrangement of the difi'erent parts in relation to each other givesa clear understanding of the mold complete. The hard-sand fillings aremade so that there are four different kindstwo of E, Fig. 8, one withthe gateopening a in it and one blank, and two of D, Fig. 9, one withthe gate-opening (Z in it and one blank. This is to suit the reversingof the mold. In setting up the mold to pour the molten metal in thebearing side of the moldcavity the gate-opening must be in the filling Dand the filling E must be blank or solid, and in setting up the mold topour the molten metal in the back side of the mold-cavity thegate-opening must be in the filling E and the filling D must be blank orsolid, so that the lower filling is always blank. In this filling D,Ihave also provided, in connection with the end fillets of thebearing-surface, an extension or narrow flange (Z which protects the endsurfaces where they come in contact with the shoulder and collar of theaxle from being chilled into a hardened surface by the contact of theiron ends of the mold with the ends of the casting. (See sectionalviews, Figs. 6 and 7.)

By the use of this construction of a mold the loss in melting metal thatforms the gate or sprue is less than a pound, while in some of the moldsthat I have examined the loss of melting metal in the gates is from fourto five pounds.

I do not design to confine myself strictly to a hard-sand filling, butmay use a filling of a composition that partakes of the hard and porousnature of a baked-sand core in the solid or blank fillings in the lowerside of the mold. These molds vary in their size, weight, andproportion, according to the variation of the hearings to be cast.

I have carefully described the parts of my mold and their functions andrelation to each other, and I believe I have fully described themanipulation of the mold in making castings in it. The advantage gainedin the use of a number of molds worked together for the rapid productionof castings is obvious, as by actual test with one mold I have producedcastings at the rate of twenty castings per hour.

N hat I claim as my invention, and desire to secure by Letters Patent,is

1. In a metal mold for brass castings, the

treats/7 combination reversible skeleton mold consisting of the centralmold-section of iron having seated in its back and bearing sideshard-sand fillings secured to the said central section by the cageshinged and locked thereto, and provided with the gate-openings throughthe said fillings, and provided with trunnion ends on the said centralsection and mounted in the hangers'and turned and handled with theattachable handles, as described and specified.

52. In a metal mold for brass castings, the combination of a centraliron mold-section provided with thehard-sand fillings for the back andbearing walls of the casting-cavity, the said fillings held in theirseatings and protected by cages secured to the said central section, andprovided with gate-openings through the said fillings into the cavity ofthe mold, as described and specified.

3. in a metal mold for l ass castings, the iron c i mbination reversiblemold provided with hard-sai'nl fillings for the back and hearing; sideof the mold-walls, provided with gate-openings and secured in contactwith the central section of the mold by metal cages, as shown anddescribed. I

4t. In a metal mold for brass castings, the combination of the hard-sandfillings with the skeleton iron mold forming the combination hard-sandand iron walls of the casting-cavity of the mold, and provided withgate-openings through the said fillings to the casting-cavity oftheniold, the said fillings protected and held to their seatings by theiron cages, substantially as shown and described.

5. In a metal mold for brass castings, the combination skeleton moldconsisting of the combination of hard-sand filling-s seated in the metalcentral mold-section and provided with gate-openings in the saidfilling's and iron cages to confine and protect the said hard-sandfillings, substantially as shown and described.

in testimony whereof I aflix, my signature in presence of two witnesses.

FRA N K HA( l G ICN JUS.

Witnesses:

S. E. MARTIN, A. Semminen.

